.passport-wrap{
    height: 100vh;
    display: flex;
    flex-direction: column;
  }
  .passport-bg{
    flex: 1;
    background: #fff url(https://www.51yuanliang.com/images/miniApp/passport-bg.jpg) center bottom no-repeat;
    background-size: cover;
  }
  .btn{
    margin: 0 auto;
    width: 350px;
    height: 200px;
    .at-button{
      color: #ff6d6d;
      border-color: #ff6d6d;
      border-radius: 76px;
    }
  }
  
  